如何在rails中使用amazon Dynamo DB时实现分页

# Gemfile
gem 'aws-sdk-dynamodb'

# config/initializers/aws.rb
Aws.config.update({
  region: 'your_region',
  credentials: Aws::Credentials.new('your_access_key_id', 'your_secret_access_key')
})

# app/models/dynamo_table.rb
class DynamoTable
  include ActiveModel::Model

  def self.paginate(page, per_page)
    client = Aws::DynamoDB::Client.new
    table_name = 'your_table_name'
    limit = per_page
    offset = (page - 1) * per_page

    params = {
      table_name: table_name,
      limit: limit,
      exclusive_start_key: offset > 0 ? { 'your_primary_key' => offset } : nil
    }

    response = client.scan(params)
    items = response.items

    items.map { |item| DynamoTable.new(item) }
  end

  def initialize(attributes = {})
    attributes.each do |name, value|
      self.class.attr_accessor(name)
      send("#{name}=", value)
    end
  end
end

# app/controllers/dynamo_tables_controller.rb
class DynamoTablesController < ApplicationController
  def index
    page = params[:page].to_i || 1
    per_page = params[:per_page].to_i || 10

    @dynamo_tables = DynamoTable.paginate(page, per_page)
  end
end